Floor or wall ground.



A. V. cuni, 1n.' FkLooR oa WALL GROUND,

APPLICATIUN FILED IAN. 26. |911.

mma Apr. 3o, 1918.

n fric.

ntnnn'r v. Gunn, Jn., or nrilnivrn, esonera.

rincon on Wem. e-noiiiin.

i ,2tid,5tid.

Specification of Letters Patent.

4ilatented Apr. dit, ilild.

f pplicatiorn led January 26, 1917. Serial Nmvldd.

ing block, a portion of adhesive wall engaging material in which the block is partly embedded and a forainineus `keying means associated with the under or inner face. oi said block which is securely engaged and gripped by the* 'adhesive material, and` through Whose open spaces the said material is forced into engagementwith said block.

The present invention consists more particularly in the novel construction, as hereinafter described and claimed, ot' the foraminous keying element` of a floor or wall ground ot' the type stated; and has for its principal objects to provide a keying elc ment which can be easily, quickly and certainly applied to the nail receiving block and which is adaptable to blocks of any size or form or to a continuous strip.

An embodiment of the invention is illustrated in. the accompanying drawings, wherein '40 exaggerated scalelselected to promote clear ness of illustration.

Fig. 4 is a plan view of the keying element. y y

Similar characters of yreference designate corresponding parts throughout the, several views.

The ground is shownin Figs. l and 3 as applied to a Wall or i'ioor'` A. and consists of the nail receiving block 1, the portion of adhesive material 2, such. asplaster of Paris, .in which said block iis-partly embedded and the foraininous keying elements 3. The block l which is conveniently of wood may be of any suitable form or dimensions and ni-ay, il' desired, though not as a matter of strict necessity, be provided at its sides with laterally projecting flanges lover which the adhesive material engages and grips. .y

The foraminous keying eleinent'is prelinnnai'ily applied against the under or inner face ol' the block l which is then pressed into the adhesive material applied to the wall, the said material being thereby forced through the openings of the keying element 4whereby to grip said element and to engage the under or inner surface of the block.

The keying element according to th'e invention consists of a device in the structural nature cfa staple or other driven headed fasteningwhose major or body portion 5 relatively flat or extensive, is of forznnino'us construction, is formed to receive the driving blow of a hainninr, and is provided with prongs G .\vli.ich,`ul` on the application; o'l a driving blo\v"to said body portion, penetrate and grip the wood block.

The said foraminous body. portion may be of any suitable or desired outline or dimensions and it may have any desired nuniber or arrangement ot' openings. lt is, however, 'formed whereby it will be slightly spaced from the wood block to which it; is applied; and for this purpose is preferably constructed of sheet metal with corrugations 7 stamped or pressed ther-cinto, the said corrugations lying above, and preferably also below, the major plane ci' suid body portion.

`As shown and preferred the foraininons body portion is oi circular or disk outline and has inner and outer concentric rings 8 and 9 connected :by radial arms 10 which provide openings 11. The inner ends of the arms l0 are suitably spaced whereby to leave the bases ot' the prongs (S relatively wide and strong, said prongs being struck up along the outer edge of the inner ring S at right angles to the plane of said ring and being :formed of portions of the material displaced in forming the openings l1. The

prongs 6 are ysuitably pointed and are of suitable length i'or the purposes in view. As shown and preferred they have a regular taper from base to point and are arranged ce'ntrally of the body portion 5 and at regular intervals and in somewhat close association lalong a circular line.

The ring 8 may, if desired, he solid, i. c.

a disk instead of a ring; but, in any event, its Width and diameter are selected whereof a suitable impl y slightly spaced from said surface.

by it may eiiiciently receive the driving blov,T ement, e.; g. a tack hammer. The corrugations 7 may be of any suitable form. They preferably extend radially throughout the Widtlrof the ring 9 and have a regular outward Hare. When the prongs r6 are driven into the block, the corrugations 7 eventually contact with the under surface ofthe block, thereby preventing further penetration of said prongs and maintaining the iiat parts of the body portion 5 In this Way, when the block With the keying lelements applied thereto is pressed into the adhesive material, such material will be forced through the openings of the part 5 into gripping engagement Witlrthe under surface of the block, at the same time covering nearly the entire surface of the part 5 and effectively gripping said part.

he keying elements 3 may be provided in' any desired number and arranged accordinglyas the circumstances and environments of use may dictate on each block. As shown in Fig. 2, the block is provided With three keying elements and they are arranged 1n staggered relation but such disclosure is merely by Way of example.

I claim as nay-inventionl. In a floor or wall ground comprising a 'n ail receiving block and a portion of adhesive material in which said block is embedded, a metallic keying element comprising a foraminous generally flat body portion formed to receive the driving blow of a hammer and provided With prongs which penetrate said block in consequence o1" a driving blow on said body portion.

2. In a ioor or wall ground comprising a nail receiving block and a portion of adhesive material in which said block is einbedded, a metallic keying element comprising a -i'oraminous generally flat body portion formed to receive the driving blow oiA a ham` mer and provided with prongs which penctrate said block in consequence of a driving blow on said portion and also provided with projections to engage the under surface of said block and space said body portion therefrom.

3. In a floor or Wall ground comprising a nail receiving block and a portion of adhesive material in which said block is embedded, a metallic keying element comprising a oralninous generally llat body portion having inner and outer concentric rings a nd radial connecting arms, and prongs adapted to penetrate said block struck up from the outer edge of the inner ring in the spaces between said arms, the outer ring being formed with corrugations to engage the ulr der surface of said block and space the body portion therefrom and the inner ring being 'proportioned to receive the driving blow of a hammer.

In testimony Whereoi I have hereunto set my hand in presence of two subscribing witnesses.

ALBERT V. GUIDE, Jn. Witnesses:

' Gr. WV. N 1X,

GORDON Hines. 

